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J. BOARDMAN.

BUCKET ELEVATOR.

No. 266,082. I Patented Oct. 17, 1882,

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WITNESSES: INVBNTOR: Z a {M ATTORNEYS.

JAMES BOARDMAN, OF HAYWARD, DAKOTA TERRITORY.

BUCKET-ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 266,082, dated October 17, 1882.

(Model) To all whom it may concern Be it known that I, JAMES BOARDMAN, of Hayward city, in the county of Pennington and Territory of Dakota, have invented anew and Improved Bucket-Elevator, of which the following is a full, clear, and exact description.

The invention consists of improvements in the construction of bucket-elevators, or carriers for elevating crushed ore from the ore breaker or crusher to the bins above for distribution to the stamps, and forcarrying grain and for other like purposes, whereby it is designed to prevtnt fine sand and other hard substances from getting in the joints, and to provide substantial and durable construction of the same, as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming part of this specification,in which similar letters of reference indicate corresponding parts in both the figures.

Figure l is a side elevation of my improved elevator with a part shown in section, and Fig. 2 is a veitical sectional elevation of the same.

I make a carrier consisting of plates at, having flanges I), turned over at the edges and connected in an endless chain by pivotq'ods d, the said plates being curved at one end, 0, that is overlapped by the end f ot' the next plate, so that with the lapping of the flanges b of the sides of said plates, as shown, the said joints are made sufliciently close to exclude tine gravel, sand, and the like from getting inside to wear the joints and clog the drums gand the carrier thereon. Besides the side flanges b,l also apply platesh outside of them, and being wider than the buckets, to permit the mater ial from beingthrown over the sidesot' the buckets to the space within the carrier.

The buckets consist of the joint-plates i and side plates j, attached to the carrier plates a, which form the back to said buckets. The carrier is mounted on the drumsg, which have faces 76, corresponding in length with thelength of the plates a and grooves l, at the angles for the pivot-rods dot thejoints. I prefer to make the drum with six or more sides.

In the present construction the plates a are a little taper from end to end, so that the side flanges, b, will enter at one end between the flanges at the wide end of another plate; but in practice it will be best to make the plates of even width from end to end, and set the ends of side flanges, I), in dies by expanding to hold it up in line; but the carrier is more especially intended for use in ore-crushing .mills, for which it is intended to provide a practicable means of elevating ore from the ore-breakers to the bins, in order that the breakers may be located low down on a solid foundation, instead ofthe present arrange ment of placing them in an elevated position so as to discharge the ore directly into the bins, which is practiced for want of a practicable apparatus t'or elevating the ore, but which is objectionable because of the severe jars of the breakers, that are unavoidable by the elevated position.

It will be noticed that in the passage of the buckets around the drums the side flanges, b. of the buckets overlap the sides of the drums, which facilitates the proper seating of the connecting-rods in the grooves lot' the drums and the smooth working of the entire apparatus.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. The endless carrier for bucket-elevators. consisting of plates (1, having flanges I) and curved ends 0, and being lapped at c fand on the flanges b, and connected by pivot-rods d, substalnially as described.

2. The combination of bucket-platesi and j with carrier-plates (1-, having flanges b and curved ends 0, and being lapped and pivoted together, substantially as described.

3. The combination, with the drums g, grooved at l, of the carrier-buckets, having flanges b, which overlap the sides of the drums, substantially as described.

4. The combination of side plates h with the endless chain of buckets and carrier therefor, substantially as described.

JAMES BOARDMAN.

Witnesses:

H. E. STUART, II. I. BOSWELL. 

